Eaton Weatherhead 3151X2 Brass CA360 Fitting, Square Head Plug, 1/8" NPT Male Square head plug fitting for closing the end of a female-threaded pipe or fitting 1/8" male SAE short (PTF) threads for attachment to female-threaded pipes and fittings CA360 brass for strength and resistance to corrosion Operating temperature range of -65 to +250 degrees F (-53 to +121 degrees C) Maximum operating pressure rating of 1,200 psi